Additional line breaks in console output when using serilog console sink

[jSharpWolf]

What happened?

If a project uses the Serilog console sink (no matter which version) and you run the project in Rider (Run, not debug) then the output in Aspire as well as in the IDE has line-breaks everywhere, making the logs unreadable.

Running the project outside of rider does not have this issue

Steps to reproduce

1. Create a new project that logs using the Serilog Console sink (package = Serilog.Sinks.Console)
2. Write a log statement in the project
3. Add the project dependency to the aspire host
4. Run the host
5. Line breaks everywhere

Expected behavior

No line breaks

JetBrains Rider version

2025.3.0.1

.NET Aspire plugin version

1.9.5

.NET Aspire version

13.0.0

.NET version

9.0

Operating System

Windows

Link to a test project to reproduce the bug

Repro repository

Additional context

In this reproduction example it's also broken when debugging, however in some of my other customer solution it's working when debugging.

[jSharpWolf]

Since this is an absolute blocker and makes Rider close to unusable for my use case, for anyone else experiencing the same, you can use the ConsoleTheme.None option in the logger as a workaround:

loggerConfig.WriteTo.Console(theme: ConsoleTheme.None);

I suspect it's the fact that for the colored console it will send individual chunks of the log line up to the next color change, which the plugin will erroneously append a line break character to

[ehorrent]

Since this is an absolute blocker and makes Rider close to unusable for my use case, for anyone else experiencing the same, you can use the AnsiConsoleTheme.Code option in the logger as a workaround:

loggerConfig.WriteTo.Console(theme: ConsoleTheme.None);

I suspect it's the fact that for the colored console it will send individual chunks of the log line up to the next color change, which the plugin will erroneously append a line break character to

I encounter the exact same issue with Serilog.

[alberthoekstra]

I can confirm the ConsoleTheme.None workaround works, but there's an important caveat for those using JSON configuration.

If you configure Serilog via appsettings.json with .ReadFrom.Configuration(), the JSON config overrides the programmatic ConsoleTheme.None setting. So this alone won't work:

builder.Host.UseSerilog((context, services, configuration) => configuration
      .ReadFrom.Configuration(context.Configuration)
      .WriteTo.Console(theme: ConsoleTheme.None)); // Gets overridden!

Solution: Set the theme in your appsettings.json:

  {
    "Serilog": {
      "WriteTo": [
        {
          "Name": "Console",
          "Args": {
            "theme": "Serilog.Sinks.SystemConsole.Themes.ConsoleTheme::None, Serilog.Sinks.Console"
          }
        }
      ]
    }
  }

This fixed the excessive line breaks in Aspire Dashboard console logs for me.